Me i beg yoiu match the scientist with the subatomic particle, atomic concept or atomic structure that he or she discovered. electrons matter is composed of indivisible particles called atoms neutrons atomic nucleus electrons orbit atomic nucleus electrons orbit atomic nucleus only at specific energy levels answer a. j. j. thomson b. democritus c. hantaro nagaoka d. niels bohr e. james chadwick f. ernest rutherford

electrons- A
matter is composed of indivisible particles called atoms- B
neutrons- E
atomic nucleus- F
electrons orbit atomic nucleus- D
electrons orbit atomic nucleus only at specific energy levels- D

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

Solubility would be your answer.